Explained: Cuauhtémoc Cárdenas, historic Mexican politician and former presidential candidate, dies at 92

Cuauhtémoc Cárdenas died Wednesday at age 92, according to Mexican President Claudia Sheinbaum

PRI

Institutional Revolutionary Party, the Mexican political party where Cárdenas began his career

PRD

Democratic Revolution Party, founded by Cárdenas in 1989 as a leftist alternative

electoral fraud

Manipulation of election results, cited as the cause of Cárdenas's 1988 presidential defeat